Wood-slicing machine



P. LR. POSTEL-VINAY.

WOOD SLICING MACHINE. APPLICATION FILED :une 24.!192I.

Patented May 9, 1922.

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P. J. R. POSTEL-VINAY.

WOOD SLICING MACHINE.

APPLlc/mon rl-LED :uns 24. 1921.

` 1,41 5,470, Patented May 9, 1922'.

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Figs y 'ANH //A WM UNITED! lSTATES rPIERRE JEAN RENE PosTELwINAY,

OF PARIS, FRANCE, ASSIGNOR TO SOCIETE vIDES MOTEURS SALMSON, (SYSTEME CANTQNTUNNEJ i koE PARIS., FRANCE,

WOOD-SLICING MACHINE.

To all whom t may concern:

-Be it -known that I, JEAN VREN PosrEL-VINAY, citizen of theiFrench Repub lic, residing at `Paris, inthe Republic of France, have invented new and useful Improvements `in Wood-Slicing Machines, of which the following is a specification.

In machines which make use of a knife for cutting the material, such for instance Vas in slicing` machines for veneer wood, the knife is frequently disposed obliquely with reference to the path of the tool-holder. This arrangement facilitates the slicing` according as the Obliquity is greater. But the use of a too great angle gives rise to al side thrust which is prejudicial to the framework of the machine and likewise requires a longer stroke for the knife-holder in order to cover the whole surface of the rectangle formed by the log. l v

The herein described arrangement which provides for a cross motion of the knifeholder 4will obviat'e these two drawbacks.

he accompanying.;- drawing shows by way of example an embodiment of this invention. ig'. l is an elevational viewv of a slicing machine with cross-motion according to this invention.

Fig. 2 is a corresponding plan view of the same.

Fig. 3 is a sectional viewof the same on a larger scale, on the line A-A F ig. l. l

The knife O (Figs. l and 2) is mounted on the knife-holder which is in turn secured to the slide D, adapted to slide in a transverse direction onthe carriage E. The carriage E is given a reciprocating motion in the longitudinal direction of the machine by means of the racks K secured thereto and the pinions N of the shaftM actuated by a known speed reducing and reversing device with limited and adjustable stroke. TheA slide D is provided with a rack H engaging the pinion I of a shaft R which rotates in a bracket secured to the carriage E, the said shaft being provided at the lower end with a pinion S engaging a rack T. The rackT is slidable lengthwise of the machine with a small stroke, and the ends thereof are adapted to enter in contact at the end of the stroke with the. adjustable spring stop pieces U, U.

The operation of this machine is as follows:

Upon starting the stroke towards the ma- Specificaton of Iletters Patent.

lfected on the return stroke f the cross-motion in the direction OZ the case of thin cuts, the is rendered loose on the shaft R by raising Patented May 9,1922. 1,921. SerialNo. 480,184;

terialto'be slicedr'the carriage E moves forwardly` and-therebyy draws with it the shaft R, the pinionS and the rack T whose inertia againsty sliding motion is less'than-that of the slide D. At the end of the stroke X-Ul of the said rack, the rear end thereof will enter in contact with the stop-piece U1. In asmuch as the shaft R continues its forward motion together with the carriage, the pinion S is obliged to rotate together with the pinion vI which by means of the rack H causes the slide D to assume a sidewise movement as shown by the arrow l (Fig. 2). Like movements but in the inverse sense are efof the knife.

If the line OV the knife is inclined by` an angle a to the direction OY of lengthwise movement; the reaction of the sliced material will take a direction approximating this perpendicular, whereby the framework of the machine will be subjected to a thrust which is equal and opposite to the effort OF, for instance. `But will require an effort OG exactly opposite to the effort OF and susceptible of reducing this latter to an advantageous degree, should the dimensions be suitably chosen.v From the combination. of the two movements OY and OZ it will furthermore result that the elements of the knife will assume an effective direction OW which makes a considerable angle, ozaX, with the edge of the knife, this being very favorable to the cut.

If it is desired for any reason to stop the cross-motion of the knife, such as in pinion S (Fig. 3)

the. clutch member 3 which then engages a fiXed tappet J andthus prevents further rotation of the shaft R the pinion S rotating idly under the action of the rack T in the operation of the machine.

aving now. described my invention I declare that what I claim and desire to secure by Letters Patent is:

l. A wood slicing machine comprising a frame, a reciprocating carriage on Said frame, means for operating said carriage, av slide, means for guiding said slide on the carriage in a'direction at an angle with the direction of travel of the carriage, a toolholder on said slide, a cutter on said toolholder having its cutting edge at an angle with the said direction of travel, a shaft (Fig. 2) perpendicular to hole-lei on said elideT :i Cutter on said toolholdei' having` its eut-ting edge at an angle with Jehe seid eliire'cionr of travel, a shaft rotatably supported on Seial carriage, tWo pinions on said shaft, a rack secured to the slide and in engagement with one of said pinions, a rack supported on the machine fi'enie and in engagement Wit-h the other pinion and e clutch adapted to disengage the latter pinion from the said Shaft and to prevent rotation-of said shaft.

ln testimony whereof have signed my name to this specification.

PIERRE JEAN RENE POSTEL-VINAY. 

